Soudal Silirub 2 Neutral Silicone Sealant Brown 600ml High Elongation >800%

Product Overview

Soudal Silirub 2 Neutral Brown is a low-modulus, neutral-curing silicone sealant supplied in a 600 ml foil pack. Used for internal and external construction joints, it offers superior adhesion to porous and nonporous substrates including brick, concrete, wood, metal, powder-coated surfaces, glass, PVC, acrylic, and polycarbonate. Its chemical formulation prevents corrosion on metal elements and remains resistant to UV exposure and temperatures from -60°C to +180°C.

The standout feature of Silirub 2 is its exceptionally high elongation at break, exceeding 800% according to ISO 37 testing. This elasticity significantly reduces the risk of joint failure in applications subject to dynamic movement or thermal expansion. Contractors specifying expansion joints, façade elements, or window and door frame sealing will find this product particularly suited for challenging building envelope installations and bulk procurement for large residential and commercial projects.

Key Features

• Neutral-curing formulation ? prevents corrosion on metal substrates during and after curing


• Exceptional elongation at break >800% ? supports movement-intensive sealing applications (ISO 37)


• Thermal resistance from -60°C to +180°C ? suitable for both cold and high-temperature environments


• UV-resistant ? maintains joint integrity and color stability in exterior installations


• Adheres to porous and nonporous substrates ? compatible with brick, concrete, wood, glass, PVC, powder coatings, polycarbonate


• Elastic recovery >80% (ISO 7389) ? ensures long-term flexibility of sealed joints


• Low modulus 0.38 N/mm2 (ISO 37) ? ideal for stress-free sealing of expansion joints

Technical Specifications

• Base: Polysiloxane (oxime)


• Consistency: Paste


• Curing System: Moisture-triggered polymerization


• Skin Formation Time: Approx. 5 min (20°C/65% RH)


• Cure Rate: 2 mm/24 h (20°C/65% RH)


• Hardness (Shore A): 25 +/- 5


• Density: 1.03?1.25 g/ml (varies by color)


• Thermal Resistance: -60°C to +180°C


• Application Temperature: +5°C to +25°C


• Elongation at Break: >800% (ISO 37)


• Elastic Recovery: >80% (ISO 7389)


• Modulus of Elasticity: 0.38 N/mm2 (ISO 37)


• Maximum Stress: 1.6 N/mm2 (ISO 37)


• Permissible Deformation: 25%


• Color: Brown

Applications

Applied in building construction for sealing windows, door frames, façade joints, and expansion joints in both residential and commercial structures. Suitable for use on brick, concrete, wood, metal, powder-coated surfaces, glass, and various plastics (PVC, acrylic, polycarbonate). The product meets requirements for high-movement joints and can be specified for UV-exposed, thermal-stressed, and corrosion-sensitive installations.

Packaging & Shipping

Packaging is a 600 ml foil sausage pack, supplied with basic installation instructions. Unit includes silicone sealant; application guns and accessories are available separately. Typical bulk shipments are carton-boxed for pallet transport.